|Let's give these old tuners an oil change|
|One side at a time, I clamp the tuners into my nut & saddle vise and flush them out with naphtha solvent forcing the solvent in and out with a plastic pipette. This dissolves the old grease.|
Don’t contaminate your naphtha by dipping the dirty pipette back into the can. Instead, pour some naphtha into a mixing cup.
|The naphtha drains out and dries quickly, and I don’t worry much about any solvent remaining in the housing it will mix with the petroleum jelly that I’ve loaded into my “grease gun” (a large-size glue syringe). |
|Here’s a neat trick! |
Why push the grease through a full-length needle? Instead, I trim the needle short with nippers. The trick is to slide a .016” guitar string into the needle before cutting. This keeps the tube from collapsing as it’s cut.
|The glue syringe makes a great grease gun. I leave this one loaded with petroleum jelly, a grease that contains no silicone. (Keep silicone away from instrument finishes because it resists finish touchups and is next to impossible to remove.)|
|A make-it-yourself syringe:|
In a pinch, you can make a tiny grease gun by cutting the top off the squeeze-bulb of a pipette. Fill it with grease, and use any 1/2" round rod as a plunger.
|Use a power screwdriver and an EZ-Winder to wind the tuner forward and backward rapidly as you squeeze in the petroleum jelly. The moving parts spread the grease to where it’s needed.|
These tuners are working smoothly now, and ready for lots of miles before their next scheduled maintenance!